Campbell IRGASON, Руководство по эксплуатации продукта

Страница: 36 / 91

9.2 Wick maintenance
9.2.1 Sonic wicks
The IRGASON cannot measure wind when water droplets completely obscure the face of the
sonic transducers. If the site experiences frequent rainfall, using wicks on the sonic transducers
may be desirable. The wicks help remove water. Under some conditions, however, droplets may
build up and remain on the transducer faces. Once the water droplets evaporate or are removed,
the IRGASON will again measure wind. Remove the water droplets by dabbing a cotton swab or
tissue on the faces of the transducers. The user must use discretion to determine if wicks are
necessary. If wicks are not used, gently remove the wicks from the sonic transducers, taking care
not to damage or peel the matching layer (rubber tips) from the brass housing of the
transducers.
Remove the wicks during the winter. The wicks will accumulate snow or freezing rain, resulting in
blockage of the sonic signals. The Spare Sonic Wicks Kit consists of three top wicks, three bottom
wicks, and an installation tool (see
FIGURE 9-2 (p. 33)). The installation tool is used by placing a
wick over the angled end of the tool, placing the straight end of the tool gently against the
transducer face, and sliding the wick down the tool onto the transducer. When installing wicks, be
sure they are located in the proper position. The top wick must be flush with the transducer face,
with the wick tail located at the lowest point of the transducer (see
FIGURE 9-1 (p. 32)). The end of
the bottom transducer wick must extend above the transducer face by one-half to one mesh line
(see
FIGURE 9-1 (p. 32)). The wicks will stay in place; it is not necessary to use an adhesive.
FIGURE 9-1. Proper location of the sonic top wick (left) and bottom wick (right)
IRGASON® Integrated CO
2
/H
2
O Open-Path Gas Analyzer and 3D Sonic Anemometer 32